carnes



(No Model.) 2 Sheets-Sheet 1.

I. P. OARNES.

STEAM CAR BRAKE.

No. 338,032. Patented Mar. 16, 1886.

(No Model.) 2 Sheets-Sheet 2.

I. P. CARNES.

STEAM CAR BRAKE.

No. 388,032. Patented'Mar. 16, 1886.

UNITED STATES PATENT OFFICE.

IRA P. CARNES, OF LIMA, OHIO, ASSIGNOR TO THE LTMA MACHINE VORKS, OFSAME PLAOE.

STEAM CAR-BRAKE.

SPECIFICATION forming part of Letters Patent No. 388,032, clated March16. 1885.

Application filed November 12, 1885. Serial No. 182,609.

To all wiz/0721, it may concern:

Be it known that I, IRA P. CARNEs, a citizen of the United States,residing at Lima, in the county of Allen and State of Ohio, haveinvented new and useful Improvementsin Steam Car-Brakes, of which thefollowing is a specification.

My invention relates to steam-brakes for railway-cars, and the purposethereof is to simplify and improve the construction of the same, wherethe operation of the brakes is ren- (lered more perfect and is broughtunder more complete control.

The invention consists in the several novel features of construction andcombinations of parts hereinafter fully set forth, and specificallypointed out in the claims annexed to this specification.

Referring to the accompanyiug drawings, Figure l is a side elevationillustrating the application of my brake mechanism. Fig. 2 is an endelevation of Fig. 1. Fig. 3 is an ele- Vation, partly in longitudinalsection, of the brake-cylinder enlarged. Fig. 4 is a detail view of thethree-way valve by which the operation of the brake mechauism iscontrolled. Fig. 5 is a plan view of Fig. l with the boiler removed.

In the said drawings the reference-numeral 1 designates thelocomotive-boiler and its immediate connections, which are of the usualconstruction.

Upon the frame of the engine is mounted, in any suitable manner, acylinder, 2, having ports 3 at or near each end and a central port, 3a.To the former is coupled a pipe, 4, supplying both ports and takingsteam from the boiler through a pipe, 5. A separate pipe, 6, suppliessteam to the port 3, and the latter pipe, as Well as the pipe 5, isconnected With a coupling, 7, communicating with a valvechamber, 8, saidcoupling being formed with a central passage to receive an eXhaust-pipe,9.

Within the valve-chamber is placed a rotary valve, 10, whereby steam maybe thrown into both ends of the cylinder 2 simultaneously or may beexhansted from the ends and thrown into the center.

Tithin the brake-cyliuder are arranged two 50 piston-heads, 11,each'having a piston-rod, 12,

(No model.)

which passes through the cylinder-head and is connected with the pistonby a ball-andsocket joint, 13, whereby a vibratory movement is permittedthe rod.

Surrounding the piston-rod 12 is a section of piping, 13, tapped intothe piston-head and packed through a stuffing-box, 14. This pipe isconcentric with the piston-rod, and of sufficient diameter to permit its-vibratory movement, while its length is sufficent to permit a fullstrokc of each piston-head, whereby support and guidance are given tothe latter, notwithstanding the lateral or vibratory movement ortwisting of the rod.

The connection is made with the piston-head by means of a screw-plug,15, inserted centrally in the front face, the socket being formed partlyin the piston, whereby the parts may be readily and quickly united orremoved.

Escape-openings 16 are formed at each end andin the center of thecylinder, and petcocks 17 are placed therein to allow the removal ofmoisture from condensation or other causes.

The piston-rods are connected to levers 18, and these in turn tobrake-rods 19, connected to the brake-heads in the usual manner.

The brakes are set by throwing steam into the ends of the cylinder bymeans of the pipes 4 and 5, and they are released by exhausting throughthe pipes 5 and 9, and at the same time throwing steam into the cylinderthrough the pipe 6.

What I claim is- 1. The combination, with the brakes of a railway-car,of a steam-cylinder having ports at its ends and a port at its center,the tubular Sections packed through the opposite ends of the cylinderand connected with pistons in the latter, the piston-rods connected withthe brakes and extending through the tubular sections, and havingball-and-socket connections with the pistons to permit the rods to movelaterally in all directions in the tubular sections, a steam-boiler, athree-way valve-casing connected With the boiler and having anexhaust-passage, 9, a pipe, 4, connecting the ends of the cylinder, apipe, 5, connected with the aforesaid pipe and with the valve-casing, apipe, 6, connecting the latter With the center port of the cylinder, anda rotary valve in Ioo said casing to throw steam in at both ends of thecylinder, or in at the center to exhaust at both ends, substantially asdescribed.

2. The combination, with a steam-cylinder having the piston-heads andthe tubular secvtions packed through the hcads of the cylinder, theports at the end of the cylinder, and

- the ports at thecenter of the same, of a steamboiler, athree-wayValve'casing connected with said boilcr and having an attached exhaustpipe, 9, a pipe, 4, connecting the ends of thev cylinder, a pipe, 5,connected With said pipe I 4 and with the valve-casing, a pipe, 6,connected with the valve-oasing and with the upper center port, and arotary valve arranged in said casing to throw steam in at both ends ofthe cylinder, or in at the center to exhaust at both ends, substantiallyas described.

In testimony whereof I afiix my signature in presence of two witnesses.w a

IRA P. CARNES. Witnesses:

R. O. EASTMAN, H. S.- PROPHET.

